diff --git a/lib/fluent/plugin/out_opensearch.rb b/lib/fluent/plugin/out_opensearch.rb
index 7fd543c..0c03f69 100644
--- a/lib/fluent/plugin/out_opensearch.rb
+++ b/lib/fluent/plugin/out_opensearch.rb
@@ -350,7 +350,11 @@ class << self
 
             @credential_mutex.synchronize do
               @_os = nil
-              @_aws_credentials = aws_credentials(@endpoint)
+              begin
+                @_aws_credentials = aws_credentials(@endpoint)
+              rescue => e
+                log.error("Failed to get new AWS credentials: #{e}")
+              end
             end
           end
         end